/Engine/Plugins/Importers/AlembicImporter/Source/AlembicLibrary/Public/AbcFile.h
Returns a material for the specified material(faceset) name or null if it wasn't created or found
[UMaterialInterface](API\Runtime\Engine\Materials\UMaterialInterface) ** GetMaterialByName ( const [FString](API\Runtime\Core\Containers\FString) & InMaterialName )